Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 2308 résultats pour les termes de recherche: ~riviere OR creek OR eau douce

Affichage des résultats: 751 à 760

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Espaces de vie et conscience politique : le cas des Mélanésiens de Nouvelle-Calédonie;Le voyage inachevé... à Joël Bonnemaison

For a long time, recovering the land of their fathers (under colonial control) has been the main target for the Melanesian community in New Caledonia. After 1985, the objective has been changing to recovering sovereignty. But every day, the unbalance...

Seabirds supply nitrogen to reefbuilding corals on remote Pacific islets

Seabirds concentrate nutrients from large marine areas on their nesting islands playing an important ecological role in nutrient transfer between marine and terrestrial ecosystems. Here we investigate the role of guano on corals reefs across scales b...

Updating the phylogenetic dating of New Caledonian biodiversity with a meta-analysis of the available evidence

For a long time, New Caledonia was considered a continental island, a fragment of Gondwana harbouring old clades that originated by vicariance and so were thought to be locally ancient. Recent molecular phylogenetic studies dating diversification and...

New Caledonian Piliocalyx transferred to Syzygium (Myrtaceae) with an updated conspectus of the species

Members of Piliocalyx Brongn. and Gris (Myrtaceae) from New Caledonia are transferred to, or given new names in, Syzygium Gaertn., including : Syzygium baudouinii (Brongn. and Gris) N. Snow, Byng and J.W. Dawson, Syzygium bullatum (Brongn. and Gris) ...

Autorités coutumières et réformes foncières : propriété, coutume, souveraineté;La formalisation des droits sur la terre : bilan des expérience...

La notion de formalisation se situe au coeur des dispositifs visant à réformer et réguler les formes d'accès, d'usage et de contrôle des ressources foncières. Les réformes foncières manipulent toutes des outils de formalisation, mais selon de...

Diversity of Halimeda (Bryopsidales, Chlorophyta) in New Caledonia : a combined morphological and molecular study

Halimeda is a genus of calcified and segmented green macroalgae in the order Bryopsidales. In New Caledonia, the genus is abundant and represents an important part of the reef flora. Previous studies recorded 19 species that were identified using mor...

Vallitalea pronyensis sp nova, isolated from a marine alkaline hydrothermal chimney

A novel thermotolerant, anaerobic, Gram-stain-positive, spore-forming bacterium was isolated from a hydrothermal chimney in Prony Bay, New Caledonia. This strain, designated FatNl3(T), grew at 15-55 degrees C (optimum 30 degrees C) and at pH 5.8-8.9 ...

Endangered New Caledonian endemic mushroom coral Cantharellus noumeae in turbid, metal-rich, natural and artificial environments

Since its description in 1984, little attention has been paid to the New Caledonian endemic mushroom coral Cantharellus noumeae (Fungiidae), an IUCN Red-listed, endangered coral species. Our study presents the first ever quantitative assessment condu...

Satellite tracking reveals novel migratory patterns and the importance of seamounts for endangered South Pacific humpback whales

The humpback whale population of New Caledonia appears to display a novel migratory pattern characterized by multiple directions, long migratory paths and frequent pauses over seamounts and other shallow geographical features. Using satellite-monitor...

A statistical algorithm for estimating chlorophyll concentration in the New Caledonian lagoon

Spatial and temporal dynamics of phytoplankton biomass and water turbidity can provide crucial information about the function, health and vulnerability of lagoon ecosystems (coral reefs, sea grasses, etc.). A statistical algorithm is proposed to esti...